if __name__ == '__main__':
    ta = ('a', 2, 0.5)
    for item in ta:
        if item == 'a':
            print('a')
        elif item == 2:
            print('number is %d' % item)
        else:
            print('float is %f' % item)
    pass
    count = 3
    for i in range(1, 30, count):
        if i % 2 == 0:
            print(i)
    pass
